Change log for 0.4.0.
Update okhttp version recommendation.
Make this 0.4.0.
Merge branch 'release-0.4.0' into dev
Inherit sonatype OSS pom.
No need to create source jar, is configured in sonatype pom.
Sign and bundle PS script.
Limit fest dep to test scope.
Push version to 0.4.1.
Change log for 0.4.1.
Add maven usage instructions.
Merge branch 'release-0.4.1' into dev
Fix README link.